In many cases, gm dealers are struggling to program these units after they are installed. Here is a source for all the help you will need. These guys can program them, and they can get or make you anything you need to get it right.

There is a lot of good info on the net about this stuff, and if you sort through it all, you can figure most of it out. Cps can save you a ton of time, money, and frustration!! I'm very happy I found them!!

I switched my factory touch screen nav to one that will also play DVDs, and added the factory rear entertainment with wireless headphones. After the dealer said they couldn't program the head unit, CPS programmed it in a day, made me a harness for the rear screen, and added an ir deal to run the headphones. Painless!!

OK, so factory navs will work, but whats a good aftermarket that fits perfectly in factory nav spot ? I have heard of lots of problems with factory navs in relatively short time periods, so lets upgrade to nav, but make it better than the factory stuff ? ? ? ?

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